With 20$ (US dollars) you can receive the registration key for a specified URL domain name, for example www.dseffects.com. You must provide the URL name and you will receive the registration key via e-mail. The registration key must be inserted in the regkey parameter and it unlocks all the applets for registered URL domain name. The applets will run on all the pages of the site and the new applets that will be released in future will work too with the registration key you buy now. Registered applets don't display the credits message and have enabled additional parameters.